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The transcriptome of the arbuscular mycorrhizal fungus Glomus intraradices (DAOM 197198) reveals functional tradeoffs in an obligate symbiont

by V. Gianinazzi-Pearson , I. R. Sanders , E. Tisserant , E. Lindquist , H. Shapiro , S. A. Rensing , A. Kohler , H. Küster , C. Da Silva , Ph. Franken , V. Fiorilli , N. Requena , M. Malbreil , C. Azcón-Aguilar , D. van Tuinen , P. Bonfante , M. Hijri , M. J. Harrison , Y. Shachar-Hill , C. Roux , D. Formey , E. Morin , D. Croll , A. Colard , G. Bécard , G. Tuskan , A. Waschke , R. Balestrini , N. Ferrol , U. Paszkowski , S. K. Gomez , N. Helber , L. Lanfranco , F. Martin , J. Poulain , P. Lammers , Y. Liu , K. Benabdellah , R. Koul , J. P. W. Young , P. Dozolme-Seddas

in Agricultural research / Arbuscular mycorrhizas / Base Sequence / Cell walls / chemistry / Colony Count, Microbial / ectomycorrhizae / Ectomycorrhizas / Enzymes / Fungal Proteins / Fungal Proteins - chemistry / Fungal Proteins - genetics / Fungal Proteins - metabolism / Fungal spores / Fungi / Gene expression / Gene Expression Regulation, Fungal / Gene Library / Genes / Genes, Fungal / Genes, Fungal - genetics / genetics / Genomes / Glomeromycota / Glomeromycota - genetics / Glomeromycota - growth & development / Glomus / Glomus intraradices / growth & development / Life Sciences / major genes / Meiosis / Meiosis - genetics / meiosis and recombination genes / metabolism / microbiology / Mycelium / Mycelium - genetics / mycorrhiza / Mycorrhizae / Mycorrhizae - genetics / Mycorrhizae - growth & development / mycorrhizal fungi / Pathogens / Plants / Plants - microbiology / Polymorphism, Single Nucleotide / Polymorphism, Single Nucleotide - genetics / Polysaccharides / Protein Structure, Tertiary / Proteins / Rapid reports / Recombination / Reproduction (biology) / Rhizophagus intraradices / RNA, Messenger / RNA, Messenger - genetics / RNA, Messenger - metabolism / roots / Saccharides / secretion / Sexual reproduction / small secreted proteins / Spore germination / Spores / Symbionts / Symbiosis / Symbiosis - genetics / transcript profiling / transcriptome / Transcriptome - genetics / Transcriptomes / transporters / Up-Regulation / Up-Regulation - genetics / vesicular arbuscular mycorrhizae

2012

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The transcriptome of the arbuscular mycorrhizal fungus Glomus intraradices (DAOM 197198) reveals functional tradeoffs in an obligate symbiont

2012

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The transcriptome of the arbuscular mycorrhizal fungus Glomus intraradices (DAOM 197198) reveals functional tradeoffs in an obligate symbiont

2012

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Journal Article

The transcriptome of the arbuscular mycorrhizal fungus Glomus intraradices (DAOM 197198) reveals functional tradeoffs in an obligate symbiont

V. Gianinazzi-Pearson,

I. R. Sanders,

E. Tisserant,

E. Lindquist,

H. Shapiro,

S. A. Rensing,

A. Kohler,

H. Küster,

C. Da Silva,

Ph. Franken,

V. Fiorilli,

N. Requena,

M. Malbreil,

C. Azcón-Aguilar,

D. van Tuinen,

P. Bonfante,

M. Hijri,

M. J. Harrison,

Y. Shachar-Hill,

C. Roux,

D. Formey,

E. Morin,

D. Croll,

A. Colard,

G. Bécard,

G. Tuskan,

A. Waschke,

R. Balestrini,

N. Ferrol,

U. Paszkowski,

S. K. Gomez,

N. Helber,

L. Lanfranco,

F. Martin,

J. Poulain,

P. Lammers,

Y. Liu,

K. Benabdellah,

R. Koul,

J. P. W. Young,

P. Dozolme-Seddas

2012

Overview

The arbuscular mycorrhizal symbiosis is arguably the most ecologically important eukaryotic symbiosis, yet it is poorly understood at the molecular level. To provide novel insights into the molecular basis of symbiosis-associated traits, we report the first genome-wide analysis of the transcriptome from Glomus intraradices DAOM 197198. We generated a set of 25 906 nonredundant virtual transcripts (NRVTs) transcribed in germinated spores, extraradical mycelium and symbiotic roots using Sanger and454sequencing. NRVTswere used to construct an oligoarray for investigating gene expression. We identified transcripts coding for the meiotic recombination machinery, as well as meiosis-specific proteins, suggesting that the lack of a known sexual cycle in G. intraradices is not a result of major deletions of genes essential for sexual reproduction and meiosis. Induced expression of genes encoding membrane transporters and small secreted proteins in intraradical mycelium, together with the lack of expression of hydrolytic enzymes acting on plant cell wall polysaccharides, are all features of G. intraradices that are shared with ectomycorrhizal symbionts and obligate biotrophic pathogens. Our results illuminate the genetic basis of symbiosis-related traits of the most ancient lineage of plant biotrophs, advancing future research on these agriculturally and ecologically important symbionts.

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Publisher

New Phytologist Trust,Blackwell Publishing Ltd,Wiley Subscription Services, Inc,Wiley

Subject

Agricultural research

/ Arbuscular mycorrhizas

/ Base Sequence

/ Cell walls

/ chemistry

/ Colony Count, Microbial

/ ectomycorrhizae